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New to 3D. Watching 3D samples provided with 55" Samsung tv, is perfect. Great 3D effects. Samsung glasses sync with TV etc. Try to watch 3D movie off pay cable channel, and the screen is split into 2 complete pictures. Research shows that split top and bottom or side by side are 3D formats. My TV remote has a 3D/2D button, nothing changes using this. Using 3D setup on tv menu, I see a side by side symbol and a top and bottom symbol. Problem is they are "greyed out" and cant be selected. I bought the tv from a friend who emigrated.